反应详情

Potassium tert-butoxide (5.4 g, 48 mmol) was added to 3-methyl-pyridin-3-ol (5 g, 45.87 mmol) in THF (200 mL) at 0° C. The mixture was stirred at room temperature for 30 min. MeI (3.2 mL, 48 mmol) was added dropwise at 0° C. and stirring was continued at room temperature for 8 h. Water was added and the mixture was evaporated to half its volume and extracted with EtOAc. The organic layer was washed with brine and water, dried over anhydrous MgSO4, and filtered. The filtrate was concentrated in vacuo, and the residue was purified by flash chromatography to give 5-methoxy-2-methyl-pyridine (4.8 g, 85%).

1. stirringstirring
2. waitwas continued at room temperature for 8 h
3. customthe mixture was evaporated to half its volume
4. extractionextracted with EtOAc
5. washThe organic layer was washed with brine and water
6. dry with materialdried over anhydrous MgSO4
7. filtrationfiltered
8. concentrationThe filtrate was concentrated in vacuo
9. customthe residue was purified by flash chromatography